Single cemented objective-lens, also applicable as double objectives.



nl G 0J 1L 0m. um DL A D E mi N E T P mn. D A mi S M I E H G., O. 0. O uw 9 .4. 00 Am N SINGLE GEMENTED OBJECTIVE LENS ALSO APLIOABLE AS DOUBLE A OBJECTIVE.

APPLIoATIoN FILED D20. 24, 1902.

N Fig/1 Fig? ITED @lh/ill ES no. @Li-esce.

Specification of Letters Pat-ent.

Patented pril 9,

Application filed December 24,1902. Serial llo. 136,495.

To rig/ZZ whom it Hefty coll/cern:

Be it known that l, @Sinin Gns'riiv linins'r n'r, n subject of the lilniperor of Gernniny, residing,r at Vienne, in the Province of liower Austria, in the Empire of Austria-llungairy, have invented certain new und usel'ul lmprovements in Single Cemented Objective- Lenses, also ilipplicnble :is Double Objectives; and l do hereby declnrc the followingr to be n lull, clear, and exact dcscriptio'n of the invention, such es will enable others skilled in the nrt to which it nppertnins to malie und use the some, reference being;l had tothe accompanying drawings, nud to letters or figures ol' rete rence marked thereon, which ferm n port of this specifi lntion.

This invention relates to objectives l'or photographic purposes, und it has lor its object the production of n compound objective by the peculinr arrangement oll which :istignnitism as well :is sphericnl und chromatic f aberration nre obvinled und u better locusine' ol" those rnj's which ere non-pnrnllel to the exis is attained. liurthermore, the improved system permits to uttuin n niore pertect ustignnitic correction thun could be ottnined by env other optienl system ol lenses.

ltcl'crrine' to the drawings, in which like erts are similarly desienotcd llie'ure l o vertical control section of nn objective, and Fig'. 2 is like view oll e. double objective.

'lhis compound objective is composed of four cemented lenses, es shown in Fie. l. The dinmeter of the ell'ective opening-etlmt is to soy, ot' the aperture ol the diaphragm which'is placed before the system amounts to about ene-twelfth of the focal length of the system. 'lhe lenses L, and li, ore concevoconvex lenses of very low reflecting power f und ot' positive e1lect,ond both are mudo of the seme or nearly-the Sonie hind of gloss. Thesejwo lenses must possess o lower refractory power than the' biconceve lens li?, which 1s located between them end which is ol' intermediate refrueting power. rlhe lmnth lens L, is biconvex lens of highest. rel'ruc- 'torj power.

Vig. 2 of the di'nwings represents L double objective which is composed ol two systems,

si o

i s nbove described, which nre s vmmel,- lljr opposed to one zmolher. 'Vlie duijh 'iufm islocnted1nthegeometrical menu ol ll, 61.24 nun. d, :5.5 mm. 6 lt-=`ll-5 nun. l 2.5 nini. 3 l=37.6t mm. 4.3 inni. R4=U073 mm. 6.7 nim. it., 2 64.113 nim, 5, nun. Dia-meter ol ditipl-iregni :3l inni. 7G Reflection indices of lenses:

li, end L3: A97. L, 1.516. In, 1.612. n, IJ Hoving thus deserilml my invention7 what .l elniin ns new therein, und desire to secure by Letters Potent, i. -in objective lor photographie purposes, composed ol' l'our cemented lenses, seid ob- Se jeelive consisting olone bieoncnvc lens oiI intermedinte rel'rnctiug power located between two eonmvowonVex collectinglenses ol the leest rel'rznuling power, to one ol' which the fourth lens ol' highest rel'rnelisur power is ml- E jacent. f

12. En objective l'or pliotoirrnjihie purposes composed olI lourcenie ned lenses, one n bi-A coneeve lens ol intermedinte retraction; power located between two ronrnivoeonvci; collect-- ingwleuses ol' the leust retroe ol" which the fourth l s 1, L power ndjueent, tl tween the conenvwe t t lens not o the fourth lens, id the. bie-oever; ol the leest radins und ull other su greater radius, su

In. testimony thor i my invention ence ol two su,

V, il nessus:

(loser i ,/iiivnsiro 

